Lexmark Z 23

I am trying to install a new Lexmark Z23 printer on my mother's pc. The printer is litterally straight out of the box, new. The usb cord is new. Everything is fine. Nothing is wrong with the printer. We even went and switched the printers at the store. This is try #3 with a printer. The walmart that we got it from is VERY stupid. This is the only printer they sell. (Not counting those 3 in 1 deals.) The computer is an HP. It is 4 months old. She has Windows XP Home Edition, 30.24 GB of memory.
Every time I try to install the printer, it says that the computer can not find the printer. However, if I unplug the usb cord it makes this little noise recognizing that something was unpluged. Any one have any clue as to what is happening? Why it won't install?
Thanks and much love.
Ren

First before installing anything read the instructions

How to Install the USB Printing Support in Microsoft Windows 2000/XP
1. Right click on My Computer and select Properties.
2. Click the Hardware tab, then click on Device Manager.
3. Click on the plus sign (+) beside Universal Serial Bus Controllers.
4. Right click the problem device (printer).
5. Go to Properties, Driver, Update Driver.
6. Choose the option to Install from list or Specific Location.
7. Click Don't Search, I will chose the driver to install and then click Next.
8. Click Have Disk.
9. Click Browse.
10. In the Look In screen, select the C: drive from the drop-down list.
11. Double-click Windows, then double-click INF. The USBPRINT.INF file for the printer will be displayed.
12. Select this file and click Open.
13. Click OK in the remaining screens that appear.


http://support.lexmark.com/cgi-perl/...=227:5:0:0:0:0